Add "Appointment Notice" as a standard classification category in the Document Codification module

Affected users: Administrative staff (MOA) and medical records clerks responsible for indexing and codifying incoming documents.

Task affected: Selecting the appropriate document class/category during the codification process of inbound documents (e.g., faxes, scanned PDFs).

Impact: Medium. Classifying appointment notices under generic categories like "Other" reduces data precision, makes future document retrieval difficult for the clinical team, and clutters the patient's record.

Current state: Because there is no specific category for appointment notices, users are forced to classify these documents under generic labels like "Other" or "Miscellaneous", which affects the overall organization of the patient chart.